Final answer:
The infusion rate for 80 mLs to be infused over 1 hour and 20 minutes using a microdrip set with a drop factor of 60 gtt/mL is 60 drops per minute.
Step-by-step explanation:
To calculate the infusion rate in drops per minute (gtt/min) for a volume of 80 mLs infused over 1 hour and 20 minutes using a microdrip set, you need to know the drop factor of the microdrip set. Microdrip sets typically have a drop factor of 60 gtt/mL. First, convert the time to minutes: 1 hour is 60 minutes, and 20 minutes is 20 minutes, so the total time is 80 minutes.
Next, calculate the rate using the following formula:
Infusion rate (gtt/min) = (Volume in mLs × Drop factor) / Time in minutes
Infusion rate (gtt/min) = (80 mLs × 60 gtt/mL) / 80 minutes
Infusion rate (gtt/min) = 4800 gtt / 80 minutes
Infusion rate (gtt/min) = 60 gtt/min.
Therefore, the infusion would need to be set at 60 drops per minute to deliver 80 mLs over the course of 1 hour and 20 minutes.